I have an 100 pages website, and he got let's say 10 pages in supplemental results. Could this affect my rankings those 10 pages ? How I escape from supplemental results with those pages ? Thanks
You can just create a unique content of your site... on your meta title, Description and even your content...
I use this site:http://www.seo4fun.com/notes/supplementals.html to remove my supplemental I hope it help.